Tire Speed Rating

 
Service Description
In addition to the Tyre Size Designation a tire may be identified by a Service Description consisting of a Load Index (or two in the case of single/dual fitment) & a Speed Symbol.
 
Speed Symbol
Indicates the speed at which the tire can carry a load corresponding to its Load Index (except for loads at speed above 210km/h) under service conditions specified by the tire manufacturer.
 
Speed Category
Indicate tire speed capabilities:
- above 210 km/h for VR tires
- above 240 km/h for ZR tires
& are included within the tires size designation
e.g. 215/50 ZR 15
 

Generally Service Description is not shown on such tires.
For actual speed capabilities & load capacities, consult the tire manufacturer concerned.

 
Car Tyres - speed limits

 

Marking

Characteristics

Speed symbol "V"

Designed for fitment to vehicles with a speed capability not exceeding 240 km/h

(e.g. 225/55 R 14 91 V)

Speed category "ZR"

Designed for fitment to vehicles with a speed capability over 240 km/h

(e.g. 195/50 ZR 15)

Speed category "VR"

Only for a transitional period. For Vehicles having speed capability over 210 km/h

(e.g. 185/60 VR 13)

Speed symbol "W"

Designed for fitment to vehicles having speed capability not exceeding 270 km/h

(e.g. 225/55 R 14 91 W)

Speed symbol "Y"

Designed for fitment to vehicles having speed capability not exceeding 300 km/h

ZR +
Speed symbol "W"

Only for a transitional period. Tyres will be marked with both designation for fitment vehicles with speed capability over 240 km/h but not exceeding 270 km/h

(e.g. 195/50 ZR 15 82 W)

ZR +
Speed symbol "Y"

Only for a transitional period. Tyres will be marked with both designation for fitment vehicles with speed capability over 240 km/h but not exceeding 300 km/h

(e.g. 195/50 ZR 15 82 Y)

ZR +
Load index/Speed Symbol "Y"

Tyres will be marked with both designation for fitment vehicles with speed capability over 240 km/h & exceeding 300 km/h

(e.g. 195/50 ZR 15 82 Y)

 
Passenger Car Tyres
 
Load Capacities & Speed Limits

Percentage of Load capacity (%)
versus Speed (1)
 
Speed Capability
of the vehicle
(km/h)
Speed Symbol
H %
Speed Symbol
V %
Speed symbol
W %
 
Speed symbol Y%
 
210 100 100 100 100
220 - 97 100 100
230 - 94 100 100
240 - 91 100 100
250 - - 95 100
260 - - 90 100
270 - - 85 100
280 - - - 95
290 - - - 90
300 (2) - - - 85

 

(1) For intermediate maximum speeds, linear interpolations of the tire load capacity is permitted.
(2) For speed capabilities over 300 km/h, the load capacities & the relevant inflation pressures will be agreed between vehicle & tire manufacturers (or their national associations) taking in to consideration the vehicle characteristics & the type of service. The load capacity quoted in the Standard Manual is the maximum load "per tire" permitted for speed "up to & including 210 km/h".
For speed in excess of 210 km/h, the maximum load per tire shall not exceed the following percentages of the load capacity quoted in the tables, depending on the type of tire & on the speed capability of the vehicle.
For ZR Tyres, where no Service Description is shown, the actual speed capabilities, load capacities & the relevant inflation pressures will be agreed between vehicle & tire manufacturers (or their national associations) taking into consideration the vehicle characteristics & type of service.
In the absence of such agreement, it is recommended that for speed capabilities between 240 & 270 km/h, the load capacities & the relevant inflation pressures of ZR tires be the same as for tires "W" speed symbol.

 

Avon tires Dunlop tires Goodyear tires Michelin tires Uniroyal tires
BF Goodrich tires Firestone tires Hankook tires Pirelli tires Yokohama tires
Bridgestone tires Fuzion tires Hoosier tires Sumitomo tires Discount tires
Continental tires General tires Kumho tires Toyo tires Wheels